#1**+1 **

csc is 1/sin in quadrant III and IV sin is negative, so there should be two answers'

1/sin = -2 sqrt3/3

sin = 1/(-2 sqrt3/3)

arcsin = -60 degrees and 240 degrees or 240 and 300 degrees or 4pi/3 and 5pi/3 ** this is 3x**

divide the answers by 3 4pi/9 5pi/9 (edited)

ElectricPavlov Mar 16, 2020